I could kid you could kid she could kid we could kid you could kid they could kid
V-ing form
I could be kiding you could be kiding she could be kiding we could be kiding you could be kiding they could be kiding
Perfect
I could have kided you could have kided she could have kided we could have kided you could have kided they could have kided
V-ing perfect
I could have been kiding you could have been kiding she could have been kiding we could have been kiding you could have been kiding they could have been kiding
Negation
Simple form
I could not kid you could not kid she could not kid we could not kid you could not kid they could not kid
V-ing form
I could not be kiding you could not be kiding she could not be kiding we could not be kiding you could not be kiding they could not be kiding
Perfect
I could not have kided you could not have kided she could not have kided we could not have kided you could not have kided they could not have kided
V-ing perfect
I could not have been kiding you could not have been kiding she could not have been kiding we could not have been kiding you could not have been kiding they could not have been kiding
Interrogative form
Simple form
could I kid? could you kid? could she kid? could we kid? could you kid? could they kid?
V-ing form
could I be kiding? could you be kiding? could she be kiding? could we be kiding? could you be kiding? could they be kiding?
Perfect
could I have kided? could you have kided? could she have kided? could we have kided? could you have kided? could they have kided?
V-ing perfect
could I have been kiding? could you have been kiding? could she have been kiding? could we have been kiding? could you have been kiding? could they have been kiding?
Interro-negative form
Simple form
could I not kid? could you not kid? could she not kid? could we not kid? could you not kid? could they not kid?
V-ing form
could I not be kiding? could you not be kiding? could she not be kiding? could we not be kiding? could you not be kiding? could they not be kiding?
Perfect
could I not have kided? could you not have kided? could she not have kided? could we not have kided? could you not have kided? could they not have kided?
V-ing perfect
could I not have been kiding? could you not have been kiding? could she not have been kiding? could we not have been kiding? could you not have been kiding? could they not have been kiding?